Percentage of cases and controls who regularly participated in long walks over the time periods given
| Value | No (%) of cases | No (%) of controls | |
| Regular long walks: Time period 1 | Exposed | 53 (24.5) | 147 (17.0) |
| (5–14 years previous) | Unexposed | 163 (75.5) | 717 (83.0) |
| Regular long walks: Time period 2 | Exposed | 66 (30.6) | 163 (18.9) |
| (15–24 years previous) | Unexposed | 150 (69.4) | 701 (81.1) |